Errors:
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Bad value “cleartype” for attribute “http-equiv” on element “meta”.
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate ID “triangle”.
Duplicate ID “view-triangle”.
Duplicate ID “triange-view”.
Element “p” not allowed as child of element “cite” in this context. (Suppressing further errors from this subtree.)
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “button” role is unnecessary for element “button”.
The “main” role is unnecessary for element “main”.
The first occurrence of ID “triangle” was here.
The first occurrence of ID “view-triangle” was here.
The first occurrence of ID “triange-view” was here.
The “contentinfo” role is unnecessary for element “footer”.
The “complementary” role is unnecessary for element “aside”.
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